A wireless channel model for the multipaths' DOA distribution, assuming directional antennas at transmitter and receiver

In this paper, the direction-of-arrival (DOA) distribution of the multipath in the wireless fading channel is analytically derived, assuming directional antennas at both transmitter and receiver. The derived DOA distribution is based on the spatial relationship between the transmitter, the receiver, and the scatterers. With scatterers uniformly distributed in the whole space, the DOA distribution is explicitly parameterized by the beamwidths of the transmitting and receiving antennas. The proposed DOA distribution is validated by fitting to the empirical data obtained in some certain measurements.